Currently, WAF is available as SaaS WAF and CLB WAF instances with different plans. For more information, see Basic Plan Specification Description. You can select a WAF instance and plan according to your business needed.
For more information on the supported regions by SaaS WAF and CLB WAF, see Supported Regions.
WAF supports only the monthly subscription (prepaid) but not pay-as-you-go billing mode.
WAF adopts the billing mode of basic plan plus extra packs or value-added capabilities:
For more information on expiration of prepaid WAF instances, see Prepaid Billing.